//Copyright 2012, egmkang wang.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of green_turtle nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// author: egmkang (egmkang@gmail.com)

#ifndef __EVENT_HANDLER_FACTORY__
#define __EVENT_HANDLER_FACTORY__
#include <map>
#include <singleton.h>

namespace green_turtle{
namespace net{

class EventHandler;
class TcpAcceptor;
struct AddrInfo;

typedef EventHandler* (*FactoryFunction)(int, const AddrInfo&);

class EventHandlerFactory : public green_turtle::Singleton<EventHandlerFactory>
{
 private:
  friend class green_turtle::Singleton<EventHandlerFactory>;

  EventHandlerFactory(): default_(nullptr) {}
 public:
  void Register(TcpAcceptor *acceptor,FactoryFunction func);
  void RegisterDefault(FactoryFunction func);
  EventHandler* NewEventHandler(TcpAcceptor *acceptor, int fd, const AddrInfo& addr);
 private:
  FactoryFunction default_;
  std::map<TcpAcceptor*, FactoryFunction> map_;
};

}
}

#endif
